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author | Ulrich Drepper <drepper@redhat.com> | 1995-09-08 17:02:25 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1995-09-08 17:02:25 +0000 |
commit | d2f5be2a1235061b46c51d7530264d086eca46ef (patch) | |
tree | 486fbdc7e9d3f2417c26242e36894a54ea6c90a8 /sysdeps/unix/sysv/linux/sys/mman.h | |
parent | d586354e51250d2aaf83149cf7d15f81e276f038 (diff) | |
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Document new files for Linux i386/ELF port.
Fri Sep 8 16:32:12 1995 Ulrich Drepper <drepper@gnu.ai.mit.edu>
* sysdeps/unix/sysv/linux/Implies,
sysdeps/unix/sysv/linux/Makefile, sysdeps/unix/sysv/linux/Subdirs,
sysdeps/unix/sysv/linux/accept.S, sysdeps/unix/sysv/linux/adjtime.c,
sysdeps/unix/sysv/linux/adjtimex.S, sysdeps/unix/sysv/linux/bind.S,
sysdeps/unix/sysv/linux/connect.S, sysdeps/unix/sysv/linux/direct.h,
sysdeps/unix/sysv/linux/dl-machine.h, sysdeps/unix/sysv/linux/errnos.h,
sysdeps/unix/sysv/linux/fork.S, sysdeps/unix/sysv/linux/gethostid.c,
sysdeps/unix/sysv/linux/gethostname.C,
sysdeps/unix/sysv/linux/getpeername.S,
sysdeps/unix/sysv/linux/getpgid.S, sysdeps/unix/sysv/linux/getpgrp.S,
sysdeps/unix/sysv/linux/getsockname.S,
sysdeps/unix/sysv/linux/getsockopt.S, sysdeps/unix/sysv/linux/gtty.S,
sysdeps/unix/sysv/linux/listen.S, sysdeps/unix/sysv/linux/local_lim.h,
sysdeps/unix/sysv/linux/madvise.c, sysdeps/unix/sysv/linux/msgctl.c,
sysdeps/unix/sysv/linux/msgget.c, sysdeps/unix/sysv/linux/msgrcv.c,
sysdeps/unix/sysv/linux/msgsnd.c, sysdeps/unix/sysv/linux/pipe.S,
sysdeps/unix/sysv/linux/poll.c, sysdeps/unix/sysv/linux/readv.c,
sysdeps/unix/sysv/linux/recv.S, sysdeps/unix/sysv/linux/recvfrom.S,
sysdeps/unix/sysv/linux/recvmsg.S, sysdeps/unix/sysv/linux/semctl.c,
sysdeps/unix/sysv/linux/semget.c, sysdeps/unix/sysv/linux/semop.c,
sysdeps/unix/sysv/linux/send.S, sysdeps/unix/sysv/linux/sendmsg.S,
sysdeps/unix/sysv/linux/sendto.S, sysdeps/unix/sysv/linux/setegid.c,
sysdeps/unix/sysv/linux/seteuid.c, sysdeps/unix/sysv/linux/sethostid.c,
sysdeps/unix/sysv/linux/setpgid.c, sysdeps/unix/sysv/linux/setpgrp.c,
sysdeps/unix/sysv/linux/setsid.S, sysdeps/unix/sysv/linux/setsockopt.S,
sysdeps/unix/sysv/linux/settimeofday.S,
sysdeps/unix/sysv/linux/shmat.c, sysdeps/unix/sysv/linux/shmctl.c,
sysdeps/unix/sysv/linux/shmdt.c, sysdeps/unix/sysv/linux/shmget.c,
sysdeps/unix/sysv/linux/shutdown.S,
sysdeps/unix/sysv/linux/sigaction.S, sysdeps/unix/sysv/linux/signal.S,
sysdeps/unix/sysv/linux/sigpending.S, sysdeps/unix/sysv/linux/sigset.h,
sysdeps/unix/sysv/linux/sockaddrcom.h,
sysdeps/unix/sysv/linux/socketpair.S, sysdeps/unix/sysv/linux/speed.c,
sysdeps/unix/sysv/linux/statbuf.h, sysdeps/unix/sysv/linux/stty.S,
sysdeps/unix/sysv/linux/syscall.h, sysdeps/unix/sysv/linux/sysconf.c,
sysdeps/unix/sysv/linux/tcdrain.c, sysdeps/unix/sysv/linux/tcflow.c,
sysdeps/unix/sysv/linux/tcflush.c, sysdeps/unix/sysv/linux/tcgetattr.c,
sysdeps/unix/sysv/linux/tcsetattr.c,
sysdeps/unix/sysv/linux/termbits.h, sysdeps/unix/sysv/linux/ualarm.c,
sysdeps/unix/sysv/linux/ulimit.c, sysdeps/unix/sysv/linux/usleep.c,
sysdeps/unix/sysv/linux/utsnamelen.h, sysdeps/unix/sysv/linux/vfork.c,
sysdeps/unix/sysv/linux/wait.c, sysdeps/unix/sysv/linux/wait4.S,
sysdeps/unix/sysv/linux/waitpid.c, sysdeps/unix/sysv/linux/writev.c:
New Linux/ELF specific, architecture independent files.
sysdeps/unix/sysv/linux/i386/Dist,
sysdeps/unix/sysv/linux/i386/Makefile,
sysdeps/unix/sysv/linux/i386/brk.S,
sysdeps/unix/sysv/linux/i386/fcntlbits.h,
sysdeps/unix/sysv/linux/i386/fpu_control.c,
sysdeps/unix/sysv/linux/i386/fpu_control.h,
sysdeps/unix/sysv/linux/i386/fstat.S,
sysdeps/unix/sysv/linux/i386/fxstat.S,
sysdeps/unix/sysv/linux/i386/ieee_fpu.c,
sysdeps/unix/sysv/linux/i386/init-first.S,
sysdeps/unix/sysv/linux/i386/ipc.S,
sysdeps/unix/sysv/linux/i386/lstat.S,
sysdeps/unix/sysv/linux/i386/lxstat.S,
sysdeps/unix/sysv/linux/i386/mknod.S,
sysdeps/unix/sysv/linux/i386/mmap.S,
sysdeps/unix/sysv/linux/i386/sbrk.S,
sysdeps/unix/sysv/linux/i386/setfpucw.c,
sysdeps/unix/sysv/linux/i386/signum.h,
sysdeps/unix/sysv/linux/i386/socket.S,
sysdeps/unix/sysv/linux/i386/stat.S,
sysdeps/unix/sysv/linux/i386/syscall.S,
sysdeps/unix/sysv/linux/i386/sysdep.S,
sysdeps/unix/sysv/linux/i386/sysdep.h,
sysdeps/unix/sysv/linux/i386/xmknod.S,
sysdeps/unix/sysv/linux/i386/xstat.S:
New Linux i386/ELF specific files.
sysdeps/unix/sysv/linux/sys/ipc_buf.h,
sysdeps/unix/sysv/linux/sys/mman.h,
sysdeps/unix/sysv/linux/sys/msq_buf.h,
sysdeps/unix/sysv/linux/sys/sem_buf.h,
sysdeps/unix/sysv/linux/sys/shm_buf.h,
sysdeps/unix/sysv/linux/sys/socketcall.h,
sysdeps/unix/sysv/linux/sys/timex.h:
New Linux/ELF specific, architecture independent header files.
Diffstat (limited to 'sysdeps/unix/sysv/linux/sys/mman.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/sys/mman.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sys/mman.h b/sysdeps/unix/sysv/linux/sys/mman.h new file mode 100644 index 0000000000..b05738d8e4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sys/mman.h @@ -0,0 +1,112 @@ +/* Definitions for BSD-style memory management. Linux version. +Copyright (C) 1994, 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* These are the bits used by 4.4 BSD and its derivatives. On systems + (such as GNU) where these facilities are not system services but can be + emulated in the C library, these are the definitions we emulate. */ + +#ifndef _SYS_MMAN_H + +#define _SYS_MMAN_H 1 +#include <features.h> + +#include <gnu/types.h> +#define __need_size_t +#include <stddef.h> + + +/* Protections are chosen from these bits, OR'd together. The + implementation does not necessarily support PROT_EXEC or PROT_WRITE + without PROT_READ. The only guarantees are that no writing will be + allowed without PROT_WRITE and no access will be allowed for PROT_NONE. */ + +#define PROT_NONE 0x00 /* No access. */ +#define PROT_READ 0x01 /* Pages can be read. */ +#define PROT_WRITE 0x02 /* Pages can be written. */ +#define PROT_EXEC 0x04 /* Pages can be executed. */ + + +/* Flags contain mapping type, sharing type and options. */ + +/* Mapping type (must choose one and only one of these). */ +#define MAP_FILE 0x0000 /* Mapped from a file or device. */ +#define MAP_ANON 0x0020 /* Allocated from anonymous virtual memory. */ +#define MAP_TYPE 0x000f /* Mask for type field. */ + +/* Sharing types (must choose one and only one of these). */ +#define MAP_COPY MAP_PRIVATE /* Virtual copy of region at mapping time. */ +#define MAP_SHARED 0x0001 /* Share changes. */ +#define MAP_PRIVATE 0x0002 /* Changes private; copy pages on write. */ + +/* Other flags. */ +#define MAP_FIXED 0x0010 /* Map address must be exactly as requested. */ +#define MAP_NOEXTEND 0x0000 /* For MAP_FILE, don't change file size. + Not available on Linux??? */ +#define MAP_HASSEMPHORE 0x0000 /* Region may contain semaphores. + Not available on Linux??? */ +#define MAP_INHERIT 0x0000 /* Region is retained after exec. + Not available on Linux??? */ + +/* Advice to `madvise'. */ +#define MADV_NORMAL 0 /* No further special treatment. */ +#define MADV_RANDOM 1 /* Expect random page references. */ +#define MADV_SEQUENTIAL 2 /* Expect sequential page references. */ +#define MADV_WILLNEED 3 /* Will need these pages. */ +#define MADV_DONTNEED 4 /* Don't need these pages. */ + +#include <sys/cdefs.h> + +__BEGIN_DECLS +/* Map addresses starting near ADDR and extending for LEN bytes. from + OFFSET into the file FD describes according to PROT and FLAGS. If ADDR + is nonzero, it is the desired mapping address. If the MAP_FIXED bit is + set in FLAGS, the mapping will be at ADDR exactly (which must be + page-aligned); otherwise the system chooses a convenient nearby address. + The return value is the actual mapping address chosen or (caddr_t) -1 + for errors (in which case `errno' is set). A successful `mmap' call + deallocates any previous mapping for the affected region. */ + +__caddr_t __mmap __P ((__caddr_t __addr, size_t __len, + int __prot, int __flags, int __fd, __off_t __offset)); +__caddr_t mmap __P ((__caddr_t __addr, size_t __len, + int __prot, int __flags, int __fd, __off_t __offset)); + +/* Deallocate any mapping for the region starting at ADDR and extending LEN + bytes. Returns 0 if successful, -1 for errors (and sets errno). */ +int __munmap __P ((__caddr_t __addr, size_t __len)); +int munmap __P ((__caddr_t __addr, size_t __len)); + +/* Change the memory protection of the region starting at ADDR and + extending LEN bytes to PROT. Returns 0 if successful, -1 for errors + (and sets errno). */ +int mprotect __P ((__caddr_t __addr, size_t __len, int __prot)); + +/* Synchronize the region starting at ADDR and extending LEN bytes with the + file it maps. Filesystem operations on a file being mapped are + unpredictable before this is done. */ +int msync __P ((__caddr_t __addr, size_t __len)); + +/* Advise the system about particular usage patterns the program follows + for the region starting at ADDR and extending LEN bytes. */ +int madvise __P ((__caddr_t __addr, size_t __len, int __advice)); + +__END_DECLS + + +#endif /* sys/mman.h */ |